The remote service point could not be contacted at the transport level.

ConnectionClosed

The connection was prematurely closed.

KeepAliveFailure

The connection for a request that specifies the Keep-alive header was closed unexpectedly.

MessageLengthLimitExceeded

A message was received that exceeded the specified limit when sending a request or receiving a response from the server.

NameResolutionFailure

The name resolver service could not resolve the host name.

Pending

An internal asynchronous request is pending.

PipelineFailure

The request was a piplined request and the connection was closed before the response was received.

ProtocolError

The response received from the server was complete but indicated a protocol-level error. For example, an HTTP protocol error such as 401 Access Denied would use this status.

ProxyNameResolutionFailure

The name resolver service could not resolve the proxy host name.

ReceiveFailure

A complete response was not received from the remote server.

RequestCanceled

The request was canceled, the WebRequest.Abort method was called, or an unclassifiable error occurred. This is the default value for Status.

RequestProhibitedByCachePolicy

The request was not permitted by the cache policy. In general, this occurs when a request is not cacheable and the effective policy prohibits sending the request to the server. You might receive this status if a request method implies the presence of a request body, a request method requires direct interaction with the server, or a request contains a conditional header.